Review of Scientific Instruments

A polarization converting device for an interfering enhanced CPT atomic clock

Kewei Wang, Yuan Tian, Yi Yin, Yuanchao Wang, Sihong Gu

Published Nov 1, 2017• 5 citations

Abstract

With interfering enhanced coherent population trapping (CPT) signals, a CPT atomic clock with improved frequency stability performance can be realized. We explore an optical device that converts single-polarized bichromatic light to left and right circularly polarized superposed bichromatic light to generate interfering enhanced CPT resonance with atoms. We have experimentally studied a tabletop CPT atomic clock apparatus with a microfabricated 87Rb atomic chip-scale cell, and the study results show that it is promising to realize a compact CPT atomic clock, even a chip-scale CPT atomic clock through microfabrication, with improved frequency stability performance.

DOI: 10.1063/1.4998486

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